28726233229056 has 72 divisors (see below), whose sum is σ = 83404006729344. Its totient is φ = 8704919157760.

The previous prime is 28726233229027. The next prime is 28726233229069. The reversal of 28726233229056 is 65092233262782.

It is a happy number.

It is a super-2 number, since 2×28726233229056² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28726233228987 and 28726233229005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700171076 + ... + 1700187971.

It is an arithmetic number, because the mean of its divisors is an integer number (1158388982352).

Almost surely, 2^{28726233229056} is an apocalyptic number.

It is an amenable number.

28726233229056 is an abundant number, since it is smaller than the sum of its proper divisors (54677773500288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28726233229056 is a wasteful number, since it uses less digits than its factorization.

28726233229056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400359077 (or 3400359063 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 57.

The spelling of 28726233229056 in words is "twenty-eight trillion, seven hundred twenty-six billion, two hundred thirty-three million, two hundred twenty-nine thousand, fifty-six".